Raising arms during a squat can accentuate spinal lordosis and anterior pelvic tilt, affecting hip flexors; lowering arms can reveal changes in hip motion.

“some people will put their arms straight up in the in the air when they Squat and that tilts their pelvis and so sometimes it's easier to do that because they're because it what it does is it it accentuates the lordosis of the spine which tilts the pelvis forward and that will affect the hip flexors so if they do that first I'll have them change to bring their arms down try to make their back a little flatter and do the same squat to see if there's any change in the motion at the hip”